diff --git a/build/src/org/jetbrains/intellij/build/IdeaCommunityProperties.kt b/build/src/org/jetbrains/intellij/build/IdeaCommunityProperties.kt
index 6b8bc0ae8c4b..08819f24f64f 100644
--- a/build/src/org/jetbrains/intellij/build/IdeaCommunityProperties.kt
+++ b/build/src/org/jetbrains/intellij/build/IdeaCommunityProperties.kt
@@ -134,7 +134,7 @@ open class IdeaCommunityProperties(private val communityHomeDir: Path) : JetBrai
 
   protected open suspend fun bundleExternalPlugins(context: BuildContext, targetDirectory: Path) {}
 
-  override fun createWindowsCustomizer(projectHome: String): WindowsDistributionCustomizer = CommunityWindowsDistributionCustomizer()
+  override fun createWindowsCustomizer(projectHome: Path): WindowsDistributionCustomizer = CommunityWindowsDistributionCustomizer()
 
   override fun createLinuxCustomizer(projectHome: String): LinuxDistributionCustomizer = CommunityLinuxDistributionCustomizer()
 
@@ -145,9 +145,11 @@ open class IdeaCommunityProperties(private val communityHomeDir: Path) : JetBrai
       icoPath = "${communityHomeDir}/build/conf/ideaCE/win/images/idea_CE.ico"
       icoPathForEAP = "${communityHomeDir}/build/conf/ideaCE/win/images/idea_CE_EAP.ico"
       installerImagesPath = "${communityHomeDir}/build/conf/ideaCE/win/images"
-      fileAssociations = listOf("java", "gradle", "groovy", "kt", "kts", "pom")
     }
 
+    override val fileAssociations: List<String>
+      get() = listOf("java", "gradle", "groovy", "kt", "kts", "pom")
+
     override fun getFullNameIncludingEdition(appInfo: ApplicationInfoProperties): String = "IntelliJ IDEA Community Edition"
 
     override fun getFullNameIncludingEditionAndVendor(appInfo: ApplicationInfoProperties): String = "IntelliJ IDEA Community Edition"
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/BuildOptions.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/BuildOptions.kt
index e8e55c13e262..cf3330d9ac11 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/BuildOptions.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/BuildOptions.kt
@@ -63,7 +63,9 @@ data class BuildOptions(
   /**
    * Pass comma-separated names of build steps (see below) to [BUILD_STEPS_TO_SKIP_PROPERTY] system property to skip them when building locally.
    */
-  @JvmField var buildStepsToSkip: Set<String> = System.getProperty(BUILD_STEPS_TO_SKIP_PROPERTY, "").split(',').dropLastWhile { it.isEmpty() }
+  @JvmField var buildStepsToSkip: Set<String> = System.getProperty(BUILD_STEPS_TO_SKIP_PROPERTY, "")
+    .split(',')
+    .dropLastWhile { it.isEmpty() }
     .filterNot { it.isBlank() }
     .toMutableSet()
     .apply {
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/MacDistributionCustomizer.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/MacDistributionCustomizer.kt
index 11e9072f6589..1093f9ed3dff 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/MacDistributionCustomizer.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/MacDistributionCustomizer.kt
@@ -152,12 +152,14 @@ open class MacDistributionCustomizer {
       "MacOS/*"
     )
 
-    val rtPatterns =
-      if (includeRuntime) context.bundledRuntime.executableFilesPatterns(OsFamily.MACOS, context.productProperties.runtimeDistribution)
-      else emptySequence()
+    val rtPatterns = if (includeRuntime) {
+      context.bundledRuntime.executableFilesPatterns(OsFamily.MACOS, context.productProperties.runtimeDistribution)
+    }
+    else {
+      emptySequence()
+    }
 
     val utilPatters = RepairUtilityBuilder.executableFilesPatterns(context)
-
     return basePatterns + rtPatterns + utilPatters + extraExecutables + context.getExtraExecutablePattern(OsFamily.MACOS)
   }
 
@@ -173,6 +175,7 @@ open class MacDistributionCustomizer {
    * > For example, the network subsystem might apply constraints for one of your apps to the other app.
    */
   @ApiStatus.Internal
-  open fun getDistributionUUID(context: BuildContext, currentUuid: UUID?): UUID =
-    UUID.nameUUIDFromBytes("${context.fullBuildNumber}-${context.options.buildDateInSeconds}".toByteArray())
+  open fun getDistributionUUID(context: BuildContext, currentUuid: UUID?): UUID {
+    return UUID.nameUUIDFromBytes("${context.fullBuildNumber}-${context.options.buildDateInSeconds}".toByteArray())
+  }
 }
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/ProductProperties.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/ProductProperties.kt
index 891be3933a7b..71646228c49e 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/ProductProperties.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/ProductProperties.kt
@@ -282,7 +282,7 @@ abstract class ProductProperties {
    * @return an instance of the class containing properties specific for Windows distribution,
    * or `null` if the product doesn't have Windows distribution.
    */
-  abstract fun createWindowsCustomizer(projectHome: String): WindowsDistributionCustomizer?
+  abstract fun createWindowsCustomizer(projectHome: Path): WindowsDistributionCustomizer?
 
   /**
    * @return an instance of the class containing properties specific for Linux distribution,
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/WindowsDistributionCustomizer.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/WindowsDistributionCustomizer.kt
index 7de2cffab8a8..394bccc246ea 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/WindowsDistributionCustomizer.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/WindowsDistributionCustomizer.kt
@@ -1,12 +1,10 @@
 // Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package org.jetbrains.intellij.build
 
-import kotlinx.collections.immutable.PersistentList
-import kotlinx.collections.immutable.persistentListOf
 import org.jetbrains.intellij.build.impl.support.RepairUtilityBuilder
 import java.nio.file.Path
 
-open class WindowsDistributionCustomizer {
+abstract class WindowsDistributionCustomizer {
   /**
    * Path to 256x256 *.ico file for Windows distribution.
    */
@@ -38,7 +36,8 @@ open class WindowsDistributionCustomizer {
   /**
    * If `true`, Windows Installer will associate *.ipr files with the IDE in Registry.
    */
-  var associateIpr: Boolean = true
+  open val associateIpr: Boolean
+    get() = true
 
   /**
    * Path to a directory containing images for installer: `logo.bmp`, `headerlogo.bmp`, `install.ico`, `uninstall.ico`.
@@ -53,12 +52,14 @@ open class WindowsDistributionCustomizer {
   /**
    * List of file extensions (without a leading dot) which the installer will suggest to associate with the product.
    */
-  var fileAssociations: List<String> = emptyList()
+  open val fileAssociations: List<String>
+    get() = emptyList()
 
   /**
    * Paths to files which will be used to overwrite the standard *.nsi files.
    */
-  var customNsiConfigurationFiles: PersistentList<String> = persistentListOf()
+  open val customNsiConfigurationFiles: List<Path>
+    get() = emptyList()
 
   /**
    * Name of the root directory in Windows .zip archive
@@ -69,8 +70,9 @@ open class WindowsDistributionCustomizer {
   /**
    * Name of the Windows installation directory and Desktop shortcut.
    */
-  open fun getNameForInstallDirAndDesktopShortcut(appInfo: ApplicationInfoProperties, buildNumber: String): String =
-    "${getFullNameIncludingEdition(appInfo)} ${if (appInfo.isEAP) buildNumber else appInfo.fullVersion}"
+  open fun getNameForInstallDirAndDesktopShortcut(appInfo: ApplicationInfoProperties, buildNumber: String): String {
+    return "${getFullNameIncludingEdition(appInfo)} ${if (appInfo.isEAP) buildNumber else appInfo.fullVersion}"
+  }
 
   /**
    * Override this method to copy additional files to the Windows distribution of the product.
@@ -92,8 +94,9 @@ open class WindowsDistributionCustomizer {
   /**
    * The returned name will be used to create links on Desktop.
    */
-  open fun getFullNameIncludingEditionAndVendor(appInfo: ApplicationInfoProperties): String =
-    appInfo.shortCompanyName + ' ' + getFullNameIncludingEdition(appInfo)
+  open fun getFullNameIncludingEditionAndVendor(appInfo: ApplicationInfoProperties): String {
+    return appInfo.shortCompanyName + ' ' + getFullNameIncludingEdition(appInfo)
+  }
 
   open fun getUninstallFeedbackPageUrl(appInfo: ApplicationInfoProperties): String? = null
 
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/dev/IdeBuilder.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/dev/IdeBuilder.kt
index c6b60e9bfdd2..39b811fbb378 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/dev/IdeBuilder.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/dev/IdeBuilder.kt
@@ -479,7 +479,7 @@ private suspend fun createBuildContext(
     BuildContextImpl(
       compilationContext = compilationContext,
       productProperties = productProperties.await(),
-      windowsDistributionCustomizer = WindowsDistributionCustomizer(),
+      windowsDistributionCustomizer = object : WindowsDistributionCustomizer() {},
       linuxDistributionCustomizer = LinuxDistributionCustomizer(),
       macDistributionCustomizer = MacDistributionCustomizer(),
       proprietaryBuildTools = if (request.scrambleTool == null) {
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/impl/BuildContextImpl.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/impl/BuildContextImpl.kt
index 41870a34f85c..6159c8e3c0aa 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/impl/BuildContextImpl.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/impl/BuildContextImpl.kt
@@ -210,7 +210,7 @@ class BuildContextImpl internal constructor(
       return BuildContextImpl(
         compilationContext = compilationContext.asArchivedIfNeeded,
         productProperties = productProperties,
-        windowsDistributionCustomizer = productProperties.createWindowsCustomizer(projectHomeAsString),
+        windowsDistributionCustomizer = productProperties.createWindowsCustomizer(projectHome),
         linuxDistributionCustomizer = productProperties.createLinuxCustomizer(projectHomeAsString),
         macDistributionCustomizer = productProperties.createMacCustomizer(projectHomeAsString),
         proprietaryBuildTools = proprietaryBuildTools,
@@ -331,23 +331,25 @@ class BuildContextImpl internal constructor(
     options.targetArch = sourceOptions.targetArch
     options.targetOs = sourceOptions.targetOs
 
-    val newAppInfo = ApplicationInfoPropertiesImpl(project, productProperties, options)
+    val newAppInfo = ApplicationInfoPropertiesImpl(project = project, productProperties = productProperties, buildOptions = options)
 
     val buildOut = options.outRootDir ?: createBuildOutputRootEvaluator(paths.projectHome, productProperties, options)(project)
     @Suppress("DEPRECATION")
     val artifactDir = if (prepareForBuild) paths.artifactDir.resolve(productProperties.productCode ?: newAppInfo.productCode) else null
     val compilationContextCopy = compilationContext.createCopy(
-      messages, options, computeBuildPaths(options = options, buildOut = buildOut, projectHome = paths.projectHome, artifactDir = artifactDir)
+      messages = messages,
+      options = options,
+      paths = computeBuildPaths(options = options, buildOut = buildOut, projectHome = paths.projectHome, artifactDir = artifactDir)
     )
     val copy = BuildContextImpl(
       compilationContext = compilationContextCopy,
       productProperties = productProperties,
-      windowsDistributionCustomizer = productProperties.createWindowsCustomizer(projectHomeForCustomizersAsString),
+      windowsDistributionCustomizer = productProperties.createWindowsCustomizer(projectHomeForCustomizers),
       linuxDistributionCustomizer = productProperties.createLinuxCustomizer(projectHomeForCustomizersAsString),
       macDistributionCustomizer = productProperties.createMacCustomizer(projectHomeForCustomizersAsString),
       proprietaryBuildTools = proprietaryBuildTools,
       applicationInfo = newAppInfo,
-      jarCacheManager = jarCacheManager
+      jarCacheManager = jarCacheManager,
     )
     if (prepareForBuild) {
       copy.compilationContext.prepareForBuild()
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/impl/WinExeInstallerBuilder.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/impl/WinExeInstallerBuilder.kt
index b41fdfdfd8ed..c44e61dbce7b 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/impl/WinExeInstallerBuilder.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/impl/WinExeInstallerBuilder.kt
@@ -75,8 +75,7 @@ internal suspend fun buildNsisInstaller(
     generator.generateUninstallerFile(nsiConfDir.resolve("un_idea_win.nsh"))
 
     prepareConfigurationFiles(nsiConfDir, uninstallerFileName, customizer, context, arch)
-    for (it in customizer.customNsiConfigurationFiles) {
-      val file = Path.of(it)
+    for (file in customizer.customNsiConfigurationFiles) {
       val copy = nsiConfDir.resolve(file.fileName)
       Files.copy(file, copy, StandardCopyOption.REPLACE_EXISTING)
       copy.setLastModifiedTime(FileTime.from(context.options.buildDateInSeconds, TimeUnit.SECONDS))
diff --git a/python/build/src/org/jetbrains/intellij/build/pycharm/PyCharmCommunityProperties.kt b/python/build/src/org/jetbrains/intellij/build/pycharm/PyCharmCommunityProperties.kt
index 26d343939a82..193a5ac29b6e 100644
--- a/python/build/src/org/jetbrains/intellij/build/pycharm/PyCharmCommunityProperties.kt
+++ b/python/build/src/org/jetbrains/intellij/build/pycharm/PyCharmCommunityProperties.kt
@@ -88,14 +88,16 @@ open class PyCharmCommunityProperties(protected val communityHome: Path) : PyCha
 
   override fun getBaseArtifactName(appInfo: ApplicationInfoProperties, buildNumber: String): String = "pycharmPC-$buildNumber"
 
-  override fun createWindowsCustomizer(projectHome: String): WindowsDistributionCustomizer = object : WindowsDistributionCustomizer() {
+  override fun createWindowsCustomizer(projectHome: Path): WindowsDistributionCustomizer = object : WindowsDistributionCustomizer() {
     init {
       icoPath = "${communityHome}/python/build/resources/PyCharmCore.ico"
       icoPathForEAP = "${communityHome}/python/build/resources/PyCharmCore_EAP.ico"
       installerImagesPath = "${communityHome}/python/build/resources"
-      fileAssociations = listOf("py")
     }
 
+    override val fileAssociations: List<String>
+      get() = listOf("py")
+
     override fun getFullNameIncludingEdition(appInfo: ApplicationInfoProperties) = "PyCharm Community Edition"
 
     override suspend fun copyAdditionalFiles(targetDir: Path, arch: JvmArchitecture, context: BuildContext) {